| 摘要 |
The present invention relates to a bathtub provided with filters for improving water quality. The bathtub comprises a bathtub body provided with a water inlet and a water outlet connected using a pipe line; and a filter for improving water quality installed in the pipe line and having ceramic balls filled therein; a pump forcibly circulating and supplying water from the bathtub body through the pipe line and the filter. The bathtub further comprises a heater installed inside the bathtub body and controlling the temperature of water; and a control box for controlling the pump and the heater. The ceramic ball is composed of 30-50 wt% of silica (SiO2); 30-50 wt% of calcium oxide (CaO); 10-25 wt% of alumina (Al2O3); 5-10 wt% of tourmaline; and 0.5-7 wt% of other components. The bathtub controls the temperature of water and circulates the water in the process of purification, thereby enabling a user to continuously use clean water at desired temperatures. |
